A 28-year-old female with a history of epilepsy presents to the ED with ongoing seizure activity for the past 45 minutes. She has received two doses of lorazepam without resolution. Her vital signs are: BP 160/90, HR 120, RR 22, SpO2 92% on room air. Which of the following is the most appropriate next step in management?
Administer fosphenytoin or phenytoin
Perform rapid sequence intubation
Initiate propofol infusion
Obtain emergent CT scan of the head